甘肃临夏太子山一带1∶5万水系沉积物地球化学特征及找矿远景区划分

GEOCHEMICAL CHARACTERISTICS OF 1:50000 WATER SEDIMENTS AND PROSPECTING DIVISION IN TAIZISHAN AREA OF LINXIA DISTRICT,GANSU PROVINCE

通过在甘肃临夏太子山一带开展1∶5万水系沉积物测量工作,初步查明了研究区1874 km2范围水系沉积物的地球化学特征,依据元素组合特征、区域成矿地质背景等圈定综合异常31处,其中见矿异常19处,划分找矿远景区6个,优选找矿靶区10处,结合异常查证,确认大多数异常受岩浆岩和断裂构造控制,区内与酸性侵入岩有关且强度较高、元素组合较好的异常区有利于找矿。通过矿产检查新发现金、铜、铅、锌、锑等金属矿(化)点13处,取得了较好的找矿效果,为找矿选区提供了依据。

Geochemical characteristics of water sediments have been preliminarily determined in reconnaissance area of 1874 km^(2)through 1:50000 stream sediment geochemical survey in Taizishan area of Linxia District,Gansu Province.31 synthetic anomalies have been delineated,19 anomalies to find minerals,6 metallogenic prospects,and 10 prior targets have been determined.We can confirm that most anomalies are controlled by magma rocks and fracture structures via abnormal verification.Moreover,we have discovered that abnormal zones with higher contents and better combinations of element types are conducive to find out minerals,and these zones are related to acidic intrusive rock.Through mineral inspection,13 regions related to ore formation or mineralization have been found again,containing gold,copper,lead,zinc,antimony and so on.Through such efforts,we can achieve good results and provide solid foundations for regions to find minerals.